491570600 has 48 divisors (see below), whose sum is σ = 1147275900. Its totient is φ = 195875840.

The previous prime is 491570587. The next prime is 491570609. The reversal of 491570600 is 6075194.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 770884 + 490799716 = 878^2 + 22154^2 .

It is not an unprimeable number, because it can be changed into a prime (491570609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49232 + ... + 58368.

Almost surely, 2^491570600 is an apocalyptic number.

491570600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491570600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573637950).

491570600 is an abundant number, since it is smaller than the sum of its proper divisors (655705300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491570600 is a wasteful number, since it uses less digits than its factorization.

491570600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9422 (or 9413 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 491570600 is about 22171.3914764049. The cubic root of 491570600 is about 789.2149440915.

The spelling of 491570600 in words is "four hundred ninety-one million, five hundred seventy thousand, six hundred".